This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 6 |
| 6 | 8 |
| 7 | 13 |
| 8 | 25 |
| 9 | 26 |
| 10 | 30 |
| 11 | 34 |
| 12 | 63 |
| 13 | 75 |
| 14 | 138 |
| 15 | 149 |
| 16 | 672 |
| 17 | 752 |
| 18 | 1067 |
| 19 | 1256 |
| 20 | 1370 |
| 21 | 3357 |
| 22 | 4120 |
| 23 | 6672 |
| 24 | 7201 |
| 25 | 7469 |
| 26 | 8738 |
| 27 | 9426 |
| 28 | 11608 |